JP5866571B2 - Bathroom electronics - Google Patents

Description

  The present invention relates to an electronic device for a bathroom equipped with a waterproof speaker, which is an electronic device such as a bathroom remote controller or a bathroom TV installed in a bathroom.

  Since the electronic equipment installed in the bathroom breaks down when hot water enters the inside, the casing has a sealed structure. On the other hand, in bathroom electronic devices such as bathroom remote controllers and bathroom televisions, an opening is formed in a part of the casing, and the opening is closed with the waterproof speaker from the inside, so that the sealed structure of the casing is maintained and the waterproof speaker is removed. It is configured so that voice and music can be pronounced into the bathroom.

  Since the casing has a sealed structure as described above, when the temperature of the casing rises, the air inside the casing is heated and expands, and the pressure inside the casing may be higher than the external pressure. Then, the air inside the casing pushes the diaphragm of the waterproof speaker from the inside to the outside, and the sound quality of voice and music becomes muffled and the sound quality deteriorates, or the pressure difference inside and outside the casing increases. If it becomes, there exists a possibility that a waterproof speaker may be damaged.

  In such a case, a film called a ventilation seal, which is made of a film that does not allow liquid to pass through but allows gas to pass, is attached to a vent formed in a part of the casing, and when the pressure in the casing rises, ventilation is performed. It is conceivable to discharge the air inside the casing to the outside through a seal.

  However, since this ventilation seal passes gas, when the air in the casing cools and the pressure drops, external air is sucked into the casing through the ventilation seal. At that time, water vapor is sucked together with the air. become. When this water vapor condenses in the casing, the screen may become cloudy particularly in a bathroom television, which is a harmful effect when viewing the television screen.

  Therefore, in order to relieve the pressure difference between the inside and outside of the casing without impairing the sealing performance of the casing, there is known one in which a diaphragm made of a resin plate having flexibility is attached to the back side of the casing (for example, Patent Document 1). reference).

  In this case, when the pressure in the casing rises, the diaphragm is bent outward by the pressure to increase the volume in the casing, thereby mitigating the internal pressure rise. On the other hand, when the pressure in the casing is reduced, the diaphragm is bent inward to alleviate the pressure drop in the casing.

JP2011-43312A ([0009], FIG. 2)

  In the above conventional one, the size of the diaphragm is relatively small with respect to the size of the casing, and the diaphragm only bends gently. Therefore, it cannot be said that the ability to relieve the pressure difference inside and outside the casing is sufficient. . For example, in a bathroom television, the casing has become larger due to the trend toward larger screens, and even if the diaphragm is applied to such a large casing, it is difficult to expect a sufficient relaxation of the pressure difference.

  In addition, since the diaphragm is exposed to the outside, if the diaphragm is thinned, it may come into contact with a sharp protrusion or the like and the diaphragm may be broken. On the other hand, if the diaphragm is thick, a large pressure difference is required to bend the diaphragm. Therefore, the diaphragm of the waterproof speaker is pressed to one side by the pressure difference before the diaphragm is bent.

  In view of the above problems, the present invention can alleviate the pressure difference even if the pressure difference between the inside and outside of the casing is small, and can sufficiently relieve the pressure difference even if the casing is large. It is an object to provide an electronic device for a bathroom.

In order to solve the above problems, an electronic device for a bathroom according to the present invention is an electronic device installed in a bathroom, wherein the opening is formed in a sealed casing and the opening is closed with a waterproof speaker from the inside. In an electronic device, a vent hole is formed in a wall surface of a casing, a cylindrical chamber portion communicating with the vent hole is provided inside the casing, and the inside and outside of the casing are hermetically isolated in the chamber portion. A pressure adjusting unit that moves in the chamber due to the pressure difference of the casing and reduces the pressure difference between the inside and outside of the casing is provided , and when the pressure adjusting unit protrudes from the chamber to the inside of the casing, A cylindrical guard portion for preventing contact with the portion is connected to the chamber portion .

Since the pressure adjustment part moves inside the chamber part to reduce the pressure difference inside and outside the casing, even if the internal volume of the casing is large, the pressure difference can be sufficiently relaxed by increasing the volume of the chamber part. . In addition, the pressure adjusting unit moves inside the chamber unit, but may protrude from the chamber unit when the pressure difference between the inside and outside of the casing increases. Therefore, when the pressure adjusting part protrudes from the chamber part to the inside of the casing, the pressure adjusting part comes into contact with the other part in the casing, and a cylindrical guard part that prevents the pressure adjusting part from being damaged is provided in the chamber. Connected to the part.

  It is not preferable that foreign matter enters the chamber portion from the vent and the pressure regulating portion is damaged or the movement of the pressure regulating portion is hindered by the foreign matter. Therefore, it is desirable to provide an entry preventing portion for preventing foreign matter from entering the chamber portion from the outside through the ventilation port. As a result, there is no risk of damage even if the pressure adjustment part is made of a bag-like member that is highly flexible and can be freely deformed. Even if the pressure difference between the inside and outside of the casing is small, the pressure difference is reduced. can do.

  If the chamber portion is provided so as to be longitudinal in the thickness direction, the length of the chamber portion cannot be increased. Therefore, by forming the vent in the peripheral wall portion of the casing and extending the chamber portion in a direction perpendicular to the thickness direction of the casing, the chamber portion can be lengthened, and the casing thickness is increased. Even without this, the volume of the chamber portion can be increased.

  When a pressure difference between the inside and outside of the casing occurs, a problem occurs in the waterproof speaker. Therefore, in the case where the inside of the casing is divided into a part in which electronic components are stored and a part in which the waterproof speakers are stored, the chamber portion may be provided in a part in which the waterproof speakers are stored. desirable.

  As is clear from the above description, the present invention is provided with a chamber portion communicating with the outside, and the pressure adjustment portion that moves in the chamber portion is used to alleviate the pressure difference inside and outside the casing. Even if it increases, the pressure difference can be sufficiently relaxed by increasing the volume of the chamber portion.

Front view of bathroom TV Rear case of bathroom tv casing The figure which shows the initial state of a bag (pressure regulation part) The figure which shows the form change accompanying the pressure change of a bag The figure which shows other forms of a vent The figure which shows the structure which used the piston as a pressure regulation part

  Referring to FIG. 1, reference numeral 1 denotes a bathroom television as an example of a bathroom electronic device. The bathroom television 1 is provided with an image display unit 11 for displaying a television image in the central portion. And the speaker part 2 is provided in the left-right direction both sides of this image display part 11. As shown in FIG. In the drawing, the right speaker unit 2 shows a state where a mesh-like cover is attached, and the left speaker unit 2 shows a state where the cover is removed. When the cover is removed in this way, the waterproof speaker 21 is exposed.

  The bathroom television 1 includes a casing that forms a sealed structure by combining the front case and the rear case from the front-rear direction. The waterproof speaker 21 is attached from the inside to the opening formed in the front case. Therefore, the diaphragm of the waterproof speaker 21 is exposed from the front case to the front.

  FIG. 2 shows the rear case. Reference numeral 12 denotes a rear case, which is provided with a partition wall 13 that separates the speaker unit 2 from a central portion in which a liquid crystal display unit facing the image display unit 11 and various electronic devices are accommodated. Since the pair of partition walls 13 are provided, the interior of the casing of the bathroom television 1 is partitioned into three spaces when the front case and the rear case 12 are combined. And the chamber part 3 was attached in the speaker part 2 on either side. A vent hole 15 is formed in the bottom surface of the rear case 12 that is a peripheral wall portion of the casing, and a cylindrical chamber portion 3 communicating with the vent hole 15 extends in a direction perpendicular to the thickness direction of the casing.

  Referring to FIG. 3, the chamber portion 3 has a cylindrical shape and is bonded so as to be airtight over the entire circumference in a state where the chamber portion 3 is inserted into a cylindrical wall 14 formed inside the bottom surface of the rear case 12. . A vent hole 15 communicating with the outside is formed on the bottom surface of the cylindrical wall 14. The vent 15 is formed in a slit shape or a lattice shape so that foreign matter does not enter the chamber portion 3 from the outside. This slit-like or lattice-like shape functions as an entry preventing portion. Similarly, a cylindrical guard portion 5 is connected to the upper end of the chamber portion 3. And the bag body 4 which is a pressure regulation part attached to the upper end of the chamber part 3 is hold | maintained by inserting | pinching with the guard part 5 and the chamber part 3. FIG.

  The bag body 4 is a bag-shaped member formed of a material such as polyethylene or polypropylene, and the peripheral edge portion 41 is formed thicker than other portions. The peripheral edge portion 41 is formed by the chamber portion 3 and the guard portion 5. Airtightness is ensured by being sandwiched. Therefore, the inside of the chamber portion 3 communicates with the outside through the vent hole 15, but the interior space of the casing is isolated by the bag body 4. A cap 51 provided with air vent holes 52 made up of a large number of pores was attached to the upper end of the guard portion 5.

  This bag body 4 is similar to a plastic bag made of the above-mentioned material, and is excellent in flexibility and can be freely deformed. However, the material itself is extended to increase the surface area. Not required. The state of the bag body 4 shown in FIG. 3 does not indicate a special technical meaning, but merely indicates a state in which the bag body 4 is simply installed. From this state, when the pressure in the casing rises with respect to the outside, the bag body 4 is pushed downward by the air in the casing so as to spread in the chamber portion 3.

  Referring to FIG. 4, as described above, when the air in the casing is heated and expanded, it is pushed by the expanded air and the bag body 4 moves downward in the chamber 3 while moving in the chamber 3. It expands (FIG. 4 (a)). When the air in the casing falls to the same temperature as the outside from that state, the air in the casing contracts, so that the state shown in FIG. 3 is restored. Usually, the bag body 4 moves between the state shown in FIG. 3 and the state shown in FIG.

  Further, when cold water is applied to the casing while the temperature is high as in summer, and the air in the casing contracts, the bag body 4 shown in FIG. At that time, if the bag body 4 comes into contact with a sharp protrusion or the like and breaks, the inside of the casing and the outside communicate with each other. In order to prevent such a problem, the guard part 5 is provided. As shown in FIG. 4B, since the bag body 4 moves in the guard portion 5 even when the bag body 4 comes out of the chamber portion 3, the risk of the bag body 4 being damaged is reduced.

  By the way, in the form shown in FIG. 3 and FIG. 4, the air vent 15 is formed in a slit shape or a lattice shape. As shown in FIG. 5, it is good also as the ventilation hole 16 which consists of one pore as a ventilation hole. Since the flow velocity of air when passing through the vent hole 16 is extremely low, even if the vent hole 16 is constituted by one pore in this way, the ventilation resistance does not become a problem.

  In the above embodiment, the bag 4 is used as the pressure adjusting unit. However, as the pressure adjusting unit, the inside and outside of the casing are hermetically isolated, and the inside and outside of the casing are moved by the pressure difference between the inside and outside of the casing. What is necessary is just to reduce the pressure difference. Therefore, as shown in FIG. 6, a piston 6 may be used as the pressure adjusting unit. The piston 6 is made of rubber and can move up and down while maintaining airtightness with the inner peripheral wall of the chamber portion 3. In addition, it is desirable to apply silicon grease or the like to the inner peripheral wall of the chamber portion 3 to reduce sliding resistance and improve airtightness.

  The piston 6 moves downward in the figure when the air in the casing expands, and conversely moves upward when the air in the casing contracts, thereby bringing the pressure in the casing closer to the external pressure.

  In each of the above embodiments, the chamber portion 3 has a cylindrical shape with a perfect cross section. However, the cross section may have an elliptical shape, a track shape, or other shapes, and the bottom surface of the rear case 12 may be used. However, a plurality of chamber portions may be arranged in close proximity to each other. Moreover, although the bathroom television has been described as an example of the bathroom electronic device, it may be applied to other bathroom electronic devices such as a bathroom remote controller.

  In addition, this invention is not limited to an above-described form, You may add a various change in the range which does not deviate from the summary of this invention.

1 Bathroom TV 12 Rear case 2 Speaker part 3 Chamber part 4 Bag body (pressure regulation part)
5 Guard part 6 Piston (pressure adjustment part)

Claims (4)

An electronic device installed in a bathroom, wherein an opening is formed in a sealed casing and the opening is closed with a waterproof speaker from the inside. A cylindrical chamber part communicating with the mouth is provided inside the casing, and the inside and outside of the casing are hermetically isolated in the chamber part, and the inside and outside of the casing are moved by the pressure difference between the inside and outside of the casing. A cylindrical pressure guard is provided to prevent the pressure regulator from contacting other parts in the casing when the pressure regulator protrudes from the chamber toward the inside of the casing. A bathroom electronic device characterized by being connected to a section .   The bathroom electronic device according to claim 1, wherein an entry preventing portion that prevents foreign matter from entering the chamber portion from the outside through the ventilation port is provided in the ventilation port.   The bathroom electronic device according to claim 1 or 2, wherein the vent is formed in a peripheral wall portion of the casing, and the chamber portion extends in a direction perpendicular to the thickness direction of the casing. . The inside of the casing is partitioned into a part in which electronic parts are stored and a part in which the waterproof speaker is stored, and the chamber part is provided in a part in which the waterproof speaker is stored. The electronic device for bathrooms in any one of Claims 1-3 .

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